Mail sorter



FIG. 1 is a front elevational view of a mail sorter showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left end elevational view thereof;

FIG. 5 is a right end elevational view thereof;

FIG. 6 is a perspective view thereof. 

The ornamental design for a mail sorter, as shown and described. 